Building an IPv4 Subnet Calculator Using JavaScript Classes
Explore how to create an IPv4 Subnet Calculator with vanilla JavaScript and OOP principles, organizing code with class inheritance.
Tech blogReact · AI · Architecture202 articles
Tech blog · India · page 4
Tech blogs on code, architecture and AI.
Deep dives into React.js, AI and ML integration, MERN stack patterns, and lessons from building production applications at scale in India — written by Deepak Kumar.
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202 articlesLatest · Oct 2026
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Sponsored postsNewHave a dev or AI product? Sponsor a post on this blog.Starts at only ₹999 per postSee how it works →Creating a Proxy Debugging Index: Practical Steps for Developers
Learn how to build a host-and-port evidence index for effective proxy debugging in web applications, ensuring efficient issue resolution.
Building High-Performance Web Apps: Lessons from iGaming
Explore the architectural innovations behind HellSpin, a modern iGaming platform, and learn how to apply these strategies to your own projects.
Silent Audio Fingerprinting on AliExpress: Security Implications
AliExpress uses silent audio fingerprinting for tracking. Understand its impact on privacy and potential responses.
Client-Side File Conversion with LetsConvert: Secure and Efficient
Explore LetsConvert's client-side file conversion using WebAssembly, offering secure and efficient processing for 8,500+ formats without server storage.
TypeScript 6.0: Preparing for the Transition to a New Codebase
Discover key changes in TypeScript 6.0, from type-checking improvements to new import syntax, and why it matters for your codebase.
Prevent Tab-Nabbing Attacks with rel="noopener"
Learn how rel="noopener" protects against tab-nabbing attacks and ensures performance isolation for your web apps.
Streamline Node.js Apps with BullMQ for Background Processing
Learn how BullMQ optimizes background job processing in Node.js, enhancing app performance and reliability. Implement scalable solutions today.
TypeScript 7.0: Faster Builds and Enhanced Multithreading
Explore how TypeScript 7.0's native port in Go elevates build speed, multithreading, and memory efficiency, transforming JS development.
Vite+ Beta: Streamlined Web Development with a Single Command
Vite+ Beta by VoidZero offers a unified toolchain for web development, simplifying workflows with a single command. Explore its features and implications.
Building Secure Browser-Only Developer Tools with Zero Server Uploads
Explore the benefits of browser-only developer tools that protect your data from server uploads. Discover how ToolSnippet ensures privacy and efficiency.
TypeScript 5.9 Brings Import Defer and tsconfig Tweaks
TypeScript 5.9 introduces import defer, a refined tsc --init, and DOM API improvements, enhancing performance and developer experience.
About the author
Deepak Kumar
Sr Software Engineer at India Today Group | Aaj Tak
Building scalable web applications and Generative AI systems. Writing about React, Node.js, AI and the engineering lessons from 9+ years of production work.
More about meHiring, or need something built?
Open to senior full-stack and AI engineering roles, and to focused contract work. Delhi NCR or fully remote. I reply within 24 hours.
What I take on
Full-stack product build
React, Next.js, Node, NestJS, MongoDB and MySQL — from idea to production.
AI features that ship
OpenAI and LangChain, RAG, semantic search, content and voice automation.
Architecture and scale
Microservices, real-time pipelines and caching — proven at national news scale.
Founding engineer work
Idea to MVP to scale, with SEO and analytics built in from the start.